Card punching device



June 8, 1965 R. E. SEYMOUR CARD PUNCHING DEVICE 2 Sheets-Sheet 1 FiledOct. 2, 1963 FIG. 1

PRIOR ART INVENTOR RAYMOND E. SEYMOUR VATTORNEY June 8, 1965 Filed 001;.2, 1963 R. E. SEYMOUR CARD PUNCHING DEVICE 2 Shets-Sheet 2 United StatesPatent 3,137,999 CARD PUNCHING DEVICE Raymond Eugene Seymour, Ambler,Pan assignor to Sperry Rand Corporation, New York, N.Y., a corporationof Delaware Filed Oct. 2, 1963, Ser. No. 313,370 14 Claims. (Cl.234-419) This invention relates to card punching devices and moreparticularly to improvements in electrically operated card punchingdevices.

It is an object of this invention to provide an improved form ofelectrically operated card punching device.

It is yet another object of this invention to provide an electricallyoperated high speed card punching device which is reliable, isinexpensive to manufacture and maintain and which substantially reducesthe sound level of such punching devices.

It is yet another object of this invention to provide an electricallyoperated card punching device which permits a substantial reduction inthe amount of current required for actuating such a device.

It is yet another object of this invention to provide an electricallyoperated card punching device in which relative movement betweencomponents is decreased during non-punching operations and whichenhances the life of said punching devices. I

It is a further object of this invention to provide a card punchingdevice which decreases the total number of moving parts.

It is yet another object of this invention to provide an improved formof card punching device wherein the total number of moving parts isreduced by the novel utilization of component members for a plurality offunctions.

Further objects and features of the invention will be pointed out in thefollowing description and claims, and illustrated in the accompanyingdrawings which disclose, by way of example, the principles of theinvention and the best mode which has been contemplated for carrying itout.

In the drawings:

FIGURE 1 illustrates a representative form of prior art card punchingdevices;

FIGURE 2 illustrates a card punching device constructed in accordancewith the basic concepts of the invention;

FIGURE 3 illustrates the relative movement of the component portions ofthe device of FIGURE 2 operating in the non-selected mode;

FIGURE 4 illustrates the relative movement of the component portions ofthe device of FIGURE 2 when operating in the selected mode.

Similar elements are given similar reference characters in each of therespective figures. 7

Turning now to FIGURE 1, there is illustrated a card punching devicerepresentative of many forms of such devices found in the prior art. Theoperation of devices ofthis type are well known and may be readilydetermined from a viewing of the figure. A more detailed description ofthe operation of such card punching devices may be found in US. Patent900,151, issued, October 6, 1908, to G. H. Davis and C. T. Bowman (seeFIGURE 7) and incorporated herein by reference.

For a device of this type, it should be noted that regardless of whetherthe swinging dog 20 isemployed in a punch or nonepunching cycle, motionwill occur about the pivot points 38 and' 33. This continuous rotationabout these points will cause an undue amount of wear. As a resultpunches rarely used will nonetheless be caused to wear. Further, a largeamount of current must be supplied to the electromagnet 25 to permit itto over- 3,187,999 Patented June 8, I965 come the effects of the tensionspring 30, friction at pivot 27 and the air gap between the armature 28and the pole of the electromagnet 25, and pull the armature 28intocontact with said electromagnet. Due to the close placement of thepunches, dictated by the requirernent that 12 punches be availableacross the short dimen sion" of a record card, the coils mustnecessarily be closely spaced and of a small enough size to permit therequired number of coils to be arranged side by side. Thus, in order toactuate the coils properly, a large current supply must be provided foreach coil to provide the required magnetic field to draw the armature 28against the electromagnet 25. Sudden application of a large current tothe electromagnet 25 will cause the armature 28 to be jerked against thepole of the electromagnet 25 producing a great deal of wear at thearmature and electromagnet 25 pole andfurther put great strain upon thepivot pins 38 and 33. The time of application of the current to theelectromagnet 25 to permit. selection of the proper position of theswinging dog 20 is critical in that selection must be completed prior tothe time that the presser bar 24 contacts'the swinging dog 20.

In the event that the presser bar 24 has already contacted the swingingdog 20, the frictional holding elfects of the contact between theswinging dog 20 and the presser bar 24 would also have to be overcome.This would require larger currents -to the electromagnet 25 as well asstrengthening all the elements required to change the position of theswinging dog 20.

The concepts of the invention as shown in FIGURES 2, 3 and 4 makepossible the improved operation of punching devices. The embodimentshows the basis by which certain elements of the punching device may beeliminated and their functions assumed by common elements and furtherthe method by which relative motion between many of the members may beeliminated during non-selection cycles to greatly reduce the problem ofwear at essential pivot points. Further the device makes possible thereduction of the current required to select individual ones of the punchbars. This is done by causing the armature portions of the arms, to bedescribed below, to sweep across and close to the stop surfaces of theactuating electromagnets during portions or the operating cycle. In thismanner, only current required to lock the armature against the surfaceof the electromagnet is required rather than a greater amount of currentwhich is required not only to lock the armature against theelectromagnet but also to pull the armature in opposition to the springand other forces described above with respect to the prior art devicesfrom the rest position of the armature to contact the electromagnetstop. The form of the invention described shows how a single arm memberis employed at its lower portion as a magnet armature and its upperportion as an interposer to drive the selected punch bar. The armatureis carried upon a rocking actuating assembly and in cycles in which theassociated punch is not to be driven, the inter-poser rides with therocking actuating assembly eliminating all relative motion between suchinterposer and the rocking assembly. In this manner, the wear asdescribed with reference to the prior art devices is completelyeliminated. Because the function of the electroinagnetis merely to holdand not to draw the armature to contact the electromagnet stop, thenoise and shock which is produced in the devices of the prior art areelimina-t'ed making the device a smoother, more rapidly operating punch.Further, since the face of the electromagnet is swept by the armatureduring every cycle of operation, the time at which the current must beapplied to the electromagnetto lock the armature isgreatly expanded andthe critical timing relationship required of prior art devices isremoved. Since the electromagnet came as stop is swept during the punchretracting stroke and punch actuating stroke great latitude inapplication of the current is provided.

Referring now to FIGURE 2 a punching device constructed in accordancewith the basic concepts of the invention is shown. The device consistsof an inverted T-shaped bail 46 having a crossbar 42 and a foot 44. Thebail 40 is connected to a pair of support members 41 by means of apivotpoint 46 located slightly off the center of the length of the crossbar42. Fastened to the top of the foot 44 by means of the bolt 47 is across member 48. The cross member 48 is forked at its end 56 to permitthe receipt of the arm member 62 to be described below. Also fastened tothe foot 44 by means of the bolt 47 is a spring support member 52.

The cross bar 42 of the bail 40 is connected at one end by means of apivot pin 54 to a link 56. The link 56 is then connected to cam follower57 by means of pivot pin 59. The cam follower 57 rides on the inside ofthe race 61 upon the cam disc 58. A shaft 66, driven by means of a motor(not shown) is connected to the cam disc 58 ofi of center. Thus, as theshaft 60 is rotated in a clockwise direction as shown by the arrow thecross bar 42 and the foot 44 take on an essentially harmonic oscillationabout the pivot point 46.

7 Connected to the opposite end of the cross bar 42 is the arm 62 whichis connected by means of the pivot pin 64. The arm 62 has a lowerportion 66 designated the armature and an upper notched portion 68designated the interposer. The notch of interposer 66 has a firstsurface 69 which operates upon the lower edge of the punch bar 74, to bedescribed below, during the select operation to permit punching. Afurther surface 71 is provided in the notch of interposer 68 to permitengagement with the notch of punch bar 74 during the punch retractionportion of a punching cycle, to be described below. Finally the upperend of the interposer 68 is beveled at surface 83 to permit theinterposer 68 to be moved out of contact with the punch bar 74 asinterposer 68 moves in its arcuate path during non-select operatingcycles as will be described. The upper portion of the arm 62 is urgedinto contact with the fork 56 of the cross member 43 by means of atension spring 70 connected between the spring support member 52 and theupper portion 63 of the arm 62. The effect of the tension spring 70 isto cause the arm 62 to be tightly locked into the fork 50 and cause thearm 62 to be rotated with the bail 46 as the bail is moved about itspivot 46. Thus the armature 66 of the arm62 tends to sweep across thestop 73 during the entire movement of bail 40. The position of the arm62 relative to the movement of the bail 40 is depicted in FIGURE 3. Thismode of operation is designated the non-selected mode and shows themovement of the arm with the rocking of the bail 40 such that norelative motion exists between the interposer portion 68 of arm 62 andthe rocking bail 40. As shown, the interposer 68 travels in an arcuatepath such that no contact is achieved between the notched portions ofthe interposer 68 and the punch bar 74. Thus no punching can take place.

Returning now to FIGURE 2, the elements required for punching will nowbe described. As shown in the figure electromagnet 72 is placed in sucha manner as to be adjacent to the armature portion 66 of the arm 62. Thenotched portion 68 of-the arm 62 is arranged to fit in a notch 75 in thepunch bar 74. The punch bar 74 is arranged to move in the perforation 76of a die block 78 into the aperture or perforation 86 of a die plate 82.

In order to make the device punch during a selected cycle the followingevents are made to occur. As the link 56 moves to its uppermost positionthe stop 73 of' the electromagnet '72 is swept by armature 66 of the arm62. During the sweep the electromagnet is actuated by means (not shown).This wide latitude is allowed for actuation of the electromagnet. Thecurrent applied to the electromagnet is sufficient to keep the armature66 in contact with the stop 73 and guide its path of motion as bail 46is rotated about its pivot point 46 but is not sufficient to preventrelative motion of the arm 62 with respect to the electromagnet 72.During the selection cycle the armature 66 and in turn the arm 62 willhave a path of motion which is essentially vertical rather than arcuateas described with reference to FIGURE 3 during the unselected mode. Theapplication of the field by the electromagnet 72 to the armature 66 willcause the bail 40 to withdraw from the arm 62' as the link 56 proceedsto its lowest position. This motion will overcome the effects of thetension spring 70 urging contact between the arm and the cross member48. The surface 69 of the notched portion of the arm 62 will remain incontact with the lower edge of the punch bar '74 and cause the bar to bemoved in an upward direction permitting the punching of a record 84placed between the dieblock 78 and the die plate 82. The movement of thedevice during the select cycle is illustrated in FIGURE 4. In FIGURE 4the device is shown as having completed a punch operation, that is thepunch bar 74 has entered the record 84 and the die plate 82. As the link56 starts to move towards its uppermost position again, the bail 40 willbe rotated .in a clockwise direction causing the arm to be displaceddownwardly. The surface 71 of the interposer 68 acts on the lower edgeof notch 75 of punch bar 74 causing the punch bar 74 to be withdrawnduring the downward motion of the arm 62 .and the bail. 40. As the link56 arrives in its lowermost point, the current in the electromagnet 72will be turned ofi releasing the arm 62 from contact with the stop 73and allowing the tension spring 76 to urge the upper portion of the arm62 back into contact with the fork 50 of the cross member it should nowbe evident that during the non-select cycle, that is when no punchingoperation is to be performed, that there is no relative motion betweenthe arm 62 which acts as the interposer and the rocking actuatingassembly itself. Thus, there is no wear at the pivot point 64 which iscomparable to the points of Wear of the pivot pins 38 and 33 of theprior art device depicted in FIGURE 1. Further the single arm member 62is employed both as the interposer and as the armature thus permittingthe replacement of two individual portions as required by the swingingdog 20 and the armature 28 of the said prior art device. Additionallysince the armature 66 of the arm 62 is during a portion of its cycle ofoperation in close contact with the electromagnet 72 only a small amountof current is required to lock the relative position of the arm 62 withrespect to the electromagnet. No large amount of current is required towithdraw the armature from its rest position against a spring to contactthe electromagnet itself. Further due to the lack of movement of thearmature from a rest position to a contact position as would be requiredwith the armature 28 of FIGURE 1 no noise is encountered during thelocking operation. This further reduces the possible wear on the stop 73of the electromagnet 72 and the armature 66 of the arm. Additionally nojerking excessive wear takes place on the pivotal points connecting theelectromagnet to the interposer as in prior art devices. The time ofapplication of the current is not critical and thus an accurately timedsource is not required.

It should be understood tht while only a single punch unit has beenshown, as many punch units as desired may be'stacked to permit thepunching of as many row posi- While there have been shown and describedand pointed out the fundamental novel features of the invention asapplied to the preferred embodiment, it is understood that variousomissions and substitutions and changes of the form and details of thedevice illustrated and its operation may be made by those skilled in theart, without departing from thespirit of the invention.

The embodiments of the inventionin which an ex elusive property orprivilege is claimed are defined as. follows:

1. In a record perforating device, a punching assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an arcuate path; a crossbar coupled to said bail member:an arm having an upper portion adapted to engage a punch bar and a lowerportion adapted to act as an armature; a pivot pin for connecting saidarm to said bail member to permit said arm to move about said pivot pin;biasing means connected to said cross bar andsaid arm to hold said armagainst said crossbar, said biasing means causing said arm to move in anarcuate path as said bail member is driven; a punch bar; electromagneticmeans disposed adjacent to the lower portion of said arm; adapted to beselectively actuated to cause said arm to overcome the elfects ofsaidbiasing means and be separated from said crossbar and move in avertical direction to engage said punch bar, moving said punch bar to aposition to permit perforation of a record.

2. In a record perforating, device, a punching assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an arcuate path; a crossbar coupled to said bail member,said crossbar having a forked receiving surface to receive an arm; anarm having an upper notched portion adapted to engage a punch bar and alower portion adapted to act as an armature; a pivot pin for connectingsaid arm to said bail member to permit said arm to move about said pivotpin; biasing means connected to said crossbar and said arm to hold saidarm in said forked receiving surface of said crossbar, said biasingmeanscausing said arm to move in an arcuate path as said bail member isdriven; a punch bar, said punch bar having a lower notched portion toaccept the notched portion of said arm; electromagnetic means disposedadjacent to the lower portion of said arm adapted to be selectivelyactuated to cause said armature portion of said arm to be drawn againstsaid electromagnetic means and causing said upper notched portion ofsaid arm to separate from said forked receiving surface of saidcrossbar, overcoming the effects of said biasing means, said arm movingin a vertical direction as said bail member is driven, to move saidpunch bar to a position to permit perforation of a record.

3. In a record perforating device, a punching assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an arcuate path; a crossbar coupled to said bail member,said crossbar having a forked receiving'surface to receive an arm; anarm having, an upper portion adapted to engage a punch bar and a lowerportion adaptedto act as an armature; a pivot pin for connecting saidarm to said bail member to permit said arm to move about said pivot pin;electromagnetic means disposed adjacent to the lower portion of saidarm, the lower portion of said arm sweeping across said electromagneticmeans as said arm is moved by said driven bail member; biasing meansconnected to said crossbar and said arm to hold said arm in said forkedreceiving surface of said crossbar, said biasing means causing said armto move in an arcuate path as said bail member is driven; apunch bar,said punch bar engageable with the said upper portion of said arm; saidelectromagnetic means beingadapted to be selectively actuated to causesaid armature portion of said arm to be drawn against saidelectromagnetic means and causing said upper portion of said arm toseparate from said forked receiving surface of saidcrossbar, overcomingthe effects of said biasing means, said arm moving in a verticaldirection across said electromagnetic means as said bail member isdriven, to engage and move saidtpunch bar to a position to permitperforation of a record.

4. In a record perforating device, a punching assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an arcuate path; a cross bar coupled to said bail member,said crossbar having a forked receiving surface to receive an arm; apunch bar, 'saidpunch bar havinga lower notched portion; an-arm havingan upper notched portion engaging the notched portion of said punch bar;a-pivot pin for connecting said arm to said bail member to permit saidarm to move about said pivot pin; and biasing means connected to-saidcrossbar and said arm to hold said arm in said forked receiving surfaceof said crossbar, said biasing means causing said arm'to move in anarcuate path as said bail member is driven removing the notched portionof said arm from the notched portion of said punch bar.

5. In a record perforating device, a punching assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an arcuate path; a crossbar coupled to said bail member,said crossbar having a forked receiving surface to receive an arm; apunch bar, said punch bar having a lower portion engageable with an arm;an arm having an upper portion engageable with the lower portion of saidpunch bar; a pivot-pin for connecting said arm to said bail member topermit said arm to move about said pivot pin; and biasing meansconnected to said crossbar and said arm to hold said arm in said forkedreceiving surface of said crossbar, said biasing means causing said-armto move in an arcuate path as said bail member is driven causing saidupper portion of said arm to move without contact, past the lowerportion of said punch bar.

6. In a record perforating device, a punching-assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an arcuate path; a crossbar coupled to said bail member,said crossbar havinga forked receiving surface to receive an arm; apunch bar, said punch bar having a lower notched portion; an arm havingan upper notched portion engaging the notched portion of said punchbarand a lower portion adapted to act as an armature; a pivot pin forconnecting said arm to said bail member to permit said arm to move aboutsaid pivot pin; electromagnetic means disposed adjacent to the lowerportion of said; arm, the lower portion ofsaid arm sweeping across saidelectromagnetic means as said arm is moved by said driven bail member;and biasing means connected to said crossbar and said arm to holdsaidarm in said forked receiving surface of said-crossbar, said biasingmeans causing said arm to move in an arcuate path as said bail member isdriven removing the notched portion of said arm from the notched portionof said punch bar.

7. In a record perforating device, a punching assembly comprising: abailmember; drive means connected to said ball member for moving saidbail member in an, arcuate path; a crossbar coupled to said bail member,said crossbar having a forked receiving surface to receive an arm, apunch bar, said punch bar having a lower notched portion; an arm havingan upper notched portion engaging, the notched portion of said punchbarand a lower portion adapted to act as ant-armature; a pivot pin forconnecting said arm to said bail member to permitsaid arm to move aboutsaid pivot pin; electromagnetic means disposed adjacent to the lowerportion of said arm, the lower portion of said arm sweeping across saidelectromagnetic means as said arm is' moved by said driven bail member;biasing means connected to said crossbar and to the upper portion ofsaid arm tohold said arm in said forked receiving surface of saidcrossbar, said biasing means causing said arm to move in an arcuatepath, as said bail member is driven, removing the notched portion ofsaid :arm from the notched portion. of said punch bar; saidelectromagnetic means being adapted to be selectively actuated to causesaid armature portion of said arm to be drawn against'saidelectromagnetic meansiand causing said upper notched portion of said armto separate from said forked receiving surface of said crossbar,overcoming the effects of said biasing means, said arm moving in avertical direction across said electromagnetic means as said bailmemberis driven, to move said punch bar to a position to permitperforation of a record.

8. In a record perforating device, a punching assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an armate path; a plurality of crossbars coupled to saidbail member; a plurality of arms, each having an Upper portion adaptedto engage a punch bar and a lower portion adapted to act as an armature;a pivot pin for connecting said arm to said bail member to permit saidarm to move about said pivot pin; a plurality of biasing means eachconnected to a single crossbar and its associated arm to hold said armsagainst said crossbars, said biasing means causing said arm to move inarcuate paths as said bail member is driven; a plurality of punch bars,one associated with each arm, a plurality of electromagnetic means, oneeach disposed adjacent to the lower portion of each of said arms adaptedto be selectively-actuatedto cause its associated one of said arms toovercome the effects of its biasing meansand be separated from said bailand move in a vertical direction to engage its associated one of saidpunch bars, moving s id punch bars to a position to permit perforationof a record.

9. In a record perforating device, a punching assembly comprising: abail member; drive means connected to said bail member for moving saidbail member in an arcuate path; a plurality of crossbars coupled to saidbail member, each of said crossbars having a forked receiving surface toreceive an arm, a plurality of arms, each having an upper notchedportion adapted to engage a punch bar and a lower portion adapted to actas an armature; a plurality'of pivot pins, each connecting one arm tothe bail member to permit said arms to move about said pivot pins; aplurality of biasing means each connected to a single crossbar and itsassociated arm to hold said arms in said forked receiving surface ofsaid crossbars, said biasing mean causing said arms to move in anarcuate path as said bail member is driven; a plurality of punch bars,

one associated with each arm, said punch bars having a lower notchedportion to accept the notched portion of its associated arm; a pluralityof electromagnetic means one each disposed adjacent to the lower portionof each of armature portion of its associated one of said arms to bedrawn against saidelectromagnetic means and causing said upper notchedportion of said associated arm to separate from said forked receivingsurface of its associated crossbar, overcoming the effects of itsassociated biasing means, said arms moving in a vertical direction assaid bail member is driven, to move their associated punch bars to aposition to permit perforation of a record.

It In a record perforating device, a punching assembly comprising: abailmember; drive means connected to said bail member for moving saidbail member in an arcuate path; a plurality of crossbars coupled to saidbail memberreach of said crossbars having a forked receiving surface toreceive an arm; a plurality of arms,

each having an upper portion adapted to engage a punch bar and a lowerportion adapted to act as an armature; a plurality of pivot pins, eachconnecting one arm to the bail member to permit said arms to move aboutsaid pivot pins; a plurality of electromagnetic means each disposedadjacent to the lower portion of each of said arms, the lower portion ofsaid arm sweeping across said electromagnetic means as said arm is movedby said driven bail member: a plurality of biasing means each said armsadapted to be selectively actuated to cause the V connected to a singlecrossbar and its associated arm to hold said arms in said forkedreceiving surface of said crossbars, said biasing means causing saidarms to move in arcuate paths as said bail member is driven; a pluralityof'punch bars, one associated with each arm, said punch bars engageablewith the upper portion of its associated arm; said electromagnetic meansbeing adapted to be selectively actuated to cause the armature portionof its associated one of said arms to be drawn against saidelectromagnetic means and causing said upper portion of said associatedarm to separate from said forked receiving surface of its associatedcrossbar, overcoming the effects of its associated biasing means, saidarms moving in a vertical direction across its associatedelectromagnetic means as said bail member is driven, to engage and movetheir associated punch bars to a position to permit perforation of arecord.

11. In a record perforating device, a punching as sembly comprising: abail member, drive means connected to said bail member for moving saidbail member in an arcuate path; a plurality of crossbars coupled to saidbail member each of said crossbars having a forked receiving surface toreceive an arm; a plurality of punch bars said punch bars each having alower notched portion; a plurality of arms, each having an upper notchedportion engaging the notched portion of its associated punch bar; and alower portion adapted to act as an armature; a plurality of pivot pins,each connecting one arm to the bail member to permit said arms to moveabout said pivot pins; and a plurality of biasing means each connectedto a single crossbar and its associated arm to hold said arms insaidforked receiving surface of said crossbar, said biasing meanscausing said arms to move in an arcuate path as said bail member isdriven, removing the notched portions of said arms from the notchedportions of their associated punch bars.

12. In a recordperforating device, a punching as sembly comprisin a bailmember, drive means connected to said bail member for moving saidbailmember in an arcuate path; a plurality of crossbars coupled to said bailmember, each of said crossbars having a forked receiving surface toreceive'an arm; a plurality of punch bars said punch bars each having alower portion engageable with an arm;'a plurality of arms, each havingan upper, portion engageable with the lower portion of its associatedpunch bar; and a lower portion adapted to act as an armature; aplurality of pivot pins, each connecting one arm to the bail member topermit said arms to move about said pivot pins; and a plurality ofbiasing means each connected to a single crossbar and its associated armto hold said arms in said forked receiving surface of said crossbars,said biasing means causing said arms to move in an arcuate path as saidbail member is driven causing said upper portion of said arm to moveWithout contact, past the lower portion of said punch bar.

13. In a record perforating device, a punching assembly comprising: abail member, drive means connected to said bail member for moving saidbail member in an arcuate path; a plurality of crossbars coupled to saidbail member, each of said crossbars having a forked receiving surface toreceive an arm; a plurality of punch bars, said punch bars each having alower notched portion; a plurality of arms each having an upper notchedportion engaging the notched. portion of its associated punch bar and alower portion adapted to act as an armature; a plurality ofpivot pins,each connecting one ann to the bail member 'to permit said arms to moveabout said pivot pins; a plurality of electromagnetic arms in saidforked receiving surface of said crossbars,

said biasing means causing said arms to move in an arcuate path as saidbail member is driven, removing the notched portions of said arms fromthe notched portions of their associated punch bars.

14. In a record perforating device, a punching assembly comprising: abail member, drive means connected to said bail member for moving saidbail member in an arcuate path; a plurality of crossbars coupled to saidbail member, each of said crossbars having a forked receiving surface toreceive an arm; a plurality of punch bars, said punch bars each having alower notched portion; a plurality of arms each having an upper notchedportion engaging the notched portion of its associated punch bar and alower portion adapted to act as an armature; a plurality of pivot pins,each connecting one arm to the bail member to permit said arms to moveabout said pivot pins; a plurality of electromagnetic means one eachdisposed adjacent to the lower portion of each of said arms, the lowerportion of said arms sweeping across their associated electromagneticmeans as said associated arms are moved by said driven bail member; aplurality of biasing means each connected to a single crossbar and tothe upper portion of its associated arm to hold said arms in said forkedreceiving surface of said crossbars, said biasing means'causing saidarms to move in an arcuate path as said bail member is driven, removingthe notched portions of said arms from the notched portions of theirassociated punch bars; said electromagnetic means being adapted to beselectively actuated to cause the armature portion of its associated armto be drawn against said electromagnetic means and causing the uppernotched portion of said associated arm -to separate from the forkedreceiving surface of said associated crossbar, overcoming the effects ofits associated biasing means, said arms moving in a vertical directionacross their associated electromagnetic means as said bail member isdriven, to move their associated punch bars to a position to permitperforation of a record.

References Cited by the Examiner UNITED STATES PATENTS 3,018,037 1/62Stemme 234-419 3,051,377 8/62 Bradbury 234-115 3,100,599 8/63 Hebert234119 X ANDREW R. JUHASZ, Primary Examiner.

WILLIAM LAWSON, Examiner.

1. IN A RECORD PERFORATING DEVICE, A PUNCHING ASSEMBLY COMPRISING: ABAIL MEMBER; DRIVE MEANS CONNECTED TO SAID BAIL MEMBER FOR MOVING SAIDBAIL MEMBER IN AN ARCUATE PATH; A CROSSBAR COUPLED TO SAID BAIL MEMBER;AN ARM HAVING AN UPPER PORTION ADAPTED TO ENGAGE A PUNCH BAR AND A LOWERPORTION ADAPTED TO ACT AS AN ARMATURE; A PIVOT PIN FOR CONNECTING SAIDARM TO SAID BAIL MEMBER TO PERMIT SAID ARM TO MOVE ABOUT SAID PIVOT PIN;BIASING MEANS CONNECTED TO SAID CROSS BAR AND SAID ARM TO HOLD SAID ARMAGAINST SAID CROSSBAR, SAID BIASING MEANS CAUSING SAID ARM TO MOVE IN ANARCUATE PATH AS SAID BAIL MEMBER IS DRIVEN; A PUNCH BAR; ELECTROMAGNETICMANS DISPOSED ADJACENT TO THE LOWER PORTION OF SAID ARM; ADAPTED TO BESELECTIVELY ACTUATED TO CAUSE SAID ARM TO OVERCOME THE EFFECTS OF SAIDBIASING MEANS AND BE SEPARATED FROM SAID CROSSBAR AND MOVE IN A VERTICALDIRECTION TO ENGAGE SAID PUNCH BAR, MOVING SAID PUNCH BAR TO A POSITIONTO PERMIT PERFORATION OF A RECORD.